﻿using System;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.ComponentModel.Design;
using Microsoft.Win32;
using Microsoft.VisualStudio;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Shell;
using EnvDTE;
using EnvDTE80;

namespace KeelKit.VSPack
{
    /// <summary>
    /// This is the class that implements the package exposed by this assembly.
    ///
    /// The minimum requirement for a class to be considered a valid package for Visual Studio
    /// is to implement the IVsPackage interface and register itself with the shell.
    /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
    /// to do it: it derives from the Package class that provides the implementation of the 
    /// IVsPackage interface and uses the registration attributes defined in the framework to 
    /// register itself and its components with the shell.
    /// </summary>
    // This attribute tells the PkgDef creation utility (CreatePkgDef.exe) that this class is
    // a package.
    [PackageRegistration(UseManagedResourcesOnly = true)]
    // This attribute is used to register the informations needed to show the this package
    // in the Help/About dialog of Visual Studio.
    [InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)]
    // This attribute is needed to let the shell know that this package exposes some menus.
    [ProvideMenuResource("Menus.ctmenu", 1)]
    // This attribute registers a tool window exposed by this package.
    [ProvideToolWindow(typeof(KeelKitPlaneToolWindow))]
    [Guid(GuidList.guidKeelKit_PackagePkgString)]
    public sealed class KeelKit_VSPackPackage : Package, IVsShellPropertyEvents
    {
        /// <summary>
        /// Default constructor of the package.
        /// Inside this method you can place any initialization code that does not require 
        /// any Visual Studio service because at this point the package object is created but 
        /// not sited yet inside Visual Studio environment. The place to do all the other 
        /// initialization is the Initialize method.
        /// </summary>
        public KeelKit_VSPackPackage()
        {
            Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering constructor for: {0}", this.ToString()));
        }

        /// <summary>
        /// This function is called when the user clicks the menu item that shows the 
        /// tool window. See the Initialize method to see how the menu item is associated to 
        /// this function using the OleMenuCommandService service and the MenuCommand class.
        /// </summary>
        private void ShowToolWindow(object sender, EventArgs e)
        {
            // Get the instance number 0 of this tool window. This window is single instance so this instance
            // is actually the only one.
            // The last flag is set to true so that if the tool window does not exists it will be created.
            ToolWindowPane window = this.FindToolWindow(typeof(KeelKitPlaneToolWindow), 0, true);
            if ((null == window) || (null == window.Frame))
            {
                throw new NotSupportedException(Resources.CanNotCreateWindow);
            }
            IVsWindowFrame windowFrame = (IVsWindowFrame)window.Frame;
            Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(windowFrame.Show());
        }


        /////////////////////////////////////////////////////////////////////////////
        // Overriden Package Implementation
        #region Package Members
        DTE dte;

        uint cookie;

        /// <summary>
        /// Initialization of the package; this method is called right after the package is sited, so this is the place
        /// where you can put all the initilaization code that rely on services provided by VisualStudio.
        /// </summary>
        protected override void Initialize()
        {
            Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString()));
            base.Initialize();
     
            IVsShell shellService = GetService(typeof(SVsShell)) as IVsShell;

            if (shellService != null)
                ErrorHandler.ThrowOnFailure(shellService.AdviseShellPropertyChanges(this, out cookie));
            KeelKit.Common.chDTE = (DTE2)this.dte;
            // Add our command handlers for menu (commands must exist in the .vsct file)
            OleMenuCommandService mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
            if (null != mcs)
            {
                // Create the command for the menu item.
                CommandID menuCommandID = new CommandID(GuidList.guidKeelKit_PackageCmdSet, (int)PkgCmdIDList.cmdidKeelKit);
                MenuCommand menuItem = new MenuCommand(ShowToolWindow, menuCommandID);
                mcs.AddCommand(menuItem);
            }
     
        }
        #endregion
        public int OnShellPropertyChange(int propid, object var)
        {

            // when zombie state changes to false, finish package initialization

            if ((int)__VSSPROPID.VSSPROPID_Zombie == propid)
            {

                if ((bool)var == false)
                {

                    // zombie state dependent code

                    this.dte = GetService(typeof(SDTE)) as DTE;



                    // eventlistener no longer needed

                    IVsShell shellService = GetService(typeof(SVsShell)) as IVsShell;

                    if (shellService != null)
                        ErrorHandler.ThrowOnFailure(shellService.UnadviseShellPropertyChanges(this.cookie));

                    this.cookie = 0;
                    //KeelKit.Common.chDTE = (DTE2)this.dte;
                    // KeelKit.Common.chAddIN =
                    //KeelKit.Connect.LoadMe(true);
                   // AddIn addin = dte.AddIns.Add("KeelKit", "sfad", "KeelKit.Connect", true);



                }

            }

            return VSConstants.S_OK;

        }


    }
}
